Installed PrestaShop Now Clean Demo Data

Question: How to Clean Demo data which is installed with  PrestaShop?

Answer:
Step 1:
Go to the "Modules > Modules" page.

Step 2:
Find the "PrestaShop Cleaner" module and click its "Install" button.

Step 3:
You Will see this window

Step 4:

Agree and truncate catalogit will delete all your products and their attributes, manufacturers, etc.

Step 5: Truncate Orders and numbers
it will delete all your customers and their orders, carts, etc.

Step 6:

Refresh your shop and see this window

Step 7: 

Click the "Check & fix" button to refine your database integrity constraints.

Its better to update functional integrity constrains after this is done 

Click the "Clean & optimize" button to reorganizes the physical storage of table data and associated index data, to reduce storage space and improve I/O efficiency when accessing the tables.

THERE IS NO WAY BACK. Be sure to only click these buttons if you do intend to wipe your database from its default content.